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Old 04-24-2012, 01:41 AM
GpsFrontier GpsFrontier is offline
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Join Date: Mar 2009
Location: Lake Havasu AZ.
Posts: 1,855
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Hello ju1234,
The terms "thin" and "slime" are quite subjective. But anytime you add food (nutrients) to water, you'll generally have some type of micro-flora eventually begin to grow (especially if you don't clean it out for months at a time). What type it is the question. However I'm quite confused now because you first stated "Two weeks later i notice brown slime on my tubing and container walls," and in your last post you now state "There is absolutely no green algae in the box or hoses or the drum."

Algae isn't always green, there are different types, as well as grow in other colors. Green is just the most common. I'm still unclear where your thin smiley film is. I know the blue drums I have are not light proof. But if when you look inside yours it's pitch black dark inside, I guess it must be coated with something on the inside, or much, much thicker plastic than the ones I have. I see plenty of blue light when I look inside mine.

I can't really tell if it looks like a problem to me without really seeing it. But one of the biggest signs of a problem you say you don't have. Those would be a bad (musty) smell, foamy water, and/or cloudy water. But if the water is clear and not cloudy, not foamy or smells like a mold. The plants foliage and roots are fine, and your only symptoms are a very thin layer of a slimy feeling substance in places. I don't think there is anything to worry about, especially if you have had the issue for months. Though I wouldn't let it go that long between nutrient changes myself, and I always clean out the system when doing a nutrient change.
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